Air-cooled fluorine pump air conditioning system and control method thereof

Abstract

The invention discloses an air-cooled fluorine pump air conditioning system and a control method thereof. The control method includes the steps that after the system is installed, actual installationdata including online pipe length and fall data are input into the system, and the system can judge the relation between negative fall and a limiting value by reading the actual installation data; andthe system is automatically controlled to enter a press operation mode, a fluorine pump operation mode or a pressure pump operation mode according to the difference of the negative fall and the limiting valve, and when the negative fall is too large, the power of a refrigerant is improved by utilizing fluorine pump driving, so that the resistance loss and the gravity loss of the refrigerant are counteracted, the product installation and use environment is widened, and meanwhile, energy conservation of annual operation can be realized.

Description

Technical field[0001]The invention belongs to the technical field of air conditioners, and specifically relates to an air-cooled fluorine pump air conditioning system and a control method thereof.Background technique[0002]Air-cooled computer room air conditioners are mainly used in the environmental humidity control of data center computer rooms. There are generally restrictions on the places where air conditioners can be installed on site. As a result, outdoor units can only be installed on the roof, podium or first floor. For general computer room air conditioners, the negative drop (the outdoor unit is on the bottom, the indoor unit is on the top, and the height difference between the internal and external units) is up to 5 meters, and the positive drop (the outdoor unit is on the top, the indoor unit is on the bottom, and the height difference between the internal and external units) The maximum length is 20 meters, and the maximum length of the in-line pipe is 80 meters. Once t...

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Problems solved by technology

[0002] Air-cooled computer room air conditioners are mainly used in the environmental humidity control of data center computer rooms. The places where air conditioners can be installed on site are generally limited, resulting in outdoor units that can only be installed on the roof, podium or first floor.

In general, the air conditioner in a computer room uses a negative drop (the outdoor unit is at the bottom, the indoor unit is at the top, and the height difference between the indoor and outdoor units) is at most 5 meters, and the positive drop (the outdoor unit is at the top, the indoor unit is at the bottom, and the height difference between the indoor and outdoor units) The maximum length is 20 meters, and the maximum length of the online pipe is 80 meters. Once the limit is exceeded, the air-cooled computer room air conditioner cannot be installed and used. It is necessary to replace the water-cooled computer room air conditioner or other types of computer room air conditioners, and the investment cost will increase.

[0003] When the distance between the internal and external units of the air conditioner in an air-cooled machine room is long and the drop is large, due to the resistance loss along the pipeline and the influence of the gravity of the refrigerant in the online pipe, the refrigerant may flash before the electronic expansion valve, causing the electronic expansion valve to fail. Unable to work stably and at the same time affect the heat transfer effect of the evaporator

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